Piston-rod packing.



' A. NAEGKEL.

PISTON ROD PACKING.

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1,072,975 7 Patented Sept. 9, 1913.

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PISTON-ROD PACKING.

To all whom it may concern:

Be it known that I, AIJEXANDERNAEQKEL,

L a resident of Davenport, in the, county of 'f Scott and State of Iowa,have mvented certain new and useful Improvements in Pistonltod Packing;and I do hereby declare the'following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart'to which it appertains to make and use the same The'object of thisinvention is to balance the packing against steam or other pressure, andprevent undue friction on the rod, and to compensate for all vibrationsofthe piston rod occasioned by wear or looseness of parts. p

In the accompanying drawings, Figure 1 is a longitudinal sectional view,with parts broken away. Fig. 2 is a cross sectional view on line 2-2,Fig; 1. Fig. 3 shows one of'the segments. 7

Referring to the drawing, 1 designates a gland forming an extension of asteam or other cylinder, and 2 the piston rod. WVithin the gland l is acylindricalcasing 3 which is designed to contain all the packingelements. The packing rings 4:, which may be of any desired form, butpreferably similar to those described in Patent No. 723,681, are locatedwithin the casing 3. s The outer end ofthis casing is closed by a collar10 which fits snugly within the casing, andlwhich bears against a ring11 which is free to vibrate on a concaved seat in the gland. Oppositeport-ions of the wallof theopening in this collar are recessed, as at12', to accommodate two vertically-disposed packing segments 13 whichcompletely fill such recesses,

completing the circle of the opening which accommodates the piston rod.The upper ends of the segments and the uppermost ends of the recessesform ball-and-socket connections between the segments and the collar.This construction permits the segments to gravitally accommodatethemselves to the piston rod to always maintain a tight fit'against thelatter and to compensate for i wear. The collar 10 is securely held inpo- "sition to retain the segments vertically. The

.means shown for this purpose consists of a stud lt projecting from thegland through the casing and into a recess in the collar. The other endof the casing is also closed against the entrance of steam or. otherpressure by a second collar 18, which is shown 7' Specification ofLetters Patent. Application filed April 7 1913. Serial No. 759,458-

Patented Sept. 9, 1913.

as being retained in place by a snap or piston ring 19 fitting in acircumferential groove. The outer face of the latter is formed with aboss 20 over which fits one end of a coil spring 21.' The boss isinternally. tapered to receive a soft metal ring 22 which forms atemporary seal or packing. The two end collars, lOand 18, and theincloslng casing 3 prevent steam or other pressure from reaching thepacking within the casing. The collar 18 presses firmly against thepacking which in turn presses against collar 10, and the latter againstthe vibrating ring. The packing as a whole is free to move with anylateral deflection of the piston rod. The collars 10 and 18 may be madein sections, if desired.

The collar 10 with its segments insures a close working joint and thesegments being free to move will accommodate themselves to allinequalities in the rod without interfering with the working thereof.

It will be seen that by my invention, I avoid all side strain on thepiston rod, all pressure being in a line parallel to the rod.

I claim as my invention:

1. A packing comprising a casing freely movable under any deflection ofa piston rod, packing elements inclosed in the casing, and means at theopposite ends of the latter for preventing steam or other pressure fromreaching the packing.

2. A packing comprising a casing freely movable under any deflection ofa piston rod, packing elements inclosed in the casing, collars designedto fit on a piston rod and closing the ends of the casing, and means forcompensating for wear carried by one of the collars. I

3. In combination with a gland and a piston rod, a casing freely-movablein reference to said gland and through which the piston rod is designedto extend, packing on thepiston rod inclosed wholly within the casing,and collars for closing the ends of said casing.

1. In combination with a gland, a vibratable ring seated against saidgland, and a piston rod, a casing bearing against said 1 ring and freelymovable with the piston rod in reference to said gland, packing on thepiston rod inclosed wholly within the casing, and collars for closingthe ends of said casing.

5. In a packing, a collar designed to fit,

p s on rod and a in it p ng formed with oppositely-disposed recesses,and self-adjusting segments fitted in. said recesses and pivoted attheir upper ends.

6. In a packing, a collar designed to fit on a piston rod and having itsopening formed with oppositely-disposed recesses rounded at their upperends, and self-adjusting segments rounded at their upper ends to fitagainst the rounded ends of said recesses, said segments being therebypivoted at their upper ends so as to accommodate themselves to thepiston rod.

7. In a packing, a collar designed to fit on a piston rod, means forholding said collar as against turning, said collar having oppositevertically-disposed recesses, and self-adjusting segments fitted in saidrecesses and having a swinging movement a holding spring for said collarforming a V g '25 7 fluid-tight joint, a second collar at the other endof said casing, said last-mentioned colla'r having its opening formedWith-0P- positely-disposed recesses, and self-adjusting segments fittedin said recesses. r I have signed this In testimony whereof,

specification in the presence of tWo subscrib ing Witnesses.

Witnesses:

NVM. H. JUER,

ALBERT *JANSEN.

ALEXANDER NAEcK-EL;

five cents each, by addressing the Commissioner oi Patents, 7Washington, D. G3

